reactos/dll/appcompat/shims/shimlib/implement_shim.inl

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS Shim library
   4  * FILE:            dll/appcompat/shims/shimlib/implement_shim.inl
   5  * PURPOSE:         Shimlib helper file, used to register shims setup with macro's from setup_shim.inl
   6  * PROGRAMMER:      Mark Jansen
   7  */
   8
   9 #ifndef SHIM_NS
  10 #error "A namespace should be provided in SHIM_NS before including this file!"
  11 #endif
  12
  13 #ifndef SHIM_NUM_HOOKS
  14 #error "The number of hooks should be provided in SHIM_NUM_HOOKS before including this file!"
  15 #endif
  16
  17 #ifndef SHIM_OBJ_NAME
  18 #error "setup_shim.inl should be included before this file!"
  19 #endif
  20
  21 #if SHIM_NUM_HOOKS > 0
  22 #ifndef SHIM_SETUP_HOOKS
  23 #error "Please define a hook: #define SHIM_SETUP_HOOKS SHIM_HOOK(num, dll_name, function_name, your_function)"
  24 #endif
  25 #else
  26 #ifdef SHIM_SETUP_HOOKS
  27 #error "Hooks are defined, yet SHIM_NUM_HOOKS is <= 0 !"
  28 #endif
  29 #endif
  30
  31 PHOOKAPI WINAPI SHIM_OBJ_NAME(GetHookAPIs)(DWORD fdwReason, PCSTR pszCmdLine, PDWORD pdwHookCount)
  32 {
  33     if (pszCmdLine)
  34     {
  35         SHIM_OBJ_NAME(g_szCommandLine) = ShimLib_StringDuplicateA(pszCmdLine);
  36     }
  37     else
  38     {
  39         SHIM_OBJ_NAME(g_szCommandLine) = "";
  40     }
  41     SHIM_OBJ_NAME(g_pAPIHooks) = ShimLib_ShimMalloc(sizeof(HOOKAPI) * SHIM_NUM_HOOKS);
  42     ZeroMemory(SHIM_OBJ_NAME(g_pAPIHooks), sizeof(HOOKAPI) * SHIM_NUM_HOOKS);
  43     *pdwHookCount = SHIM_NUM_HOOKS;
  44
  45 #ifdef SHIM_NOTIFY_FN
  46     if (!SHIM_NOTIFY_FN(fdwReason, NULL))
  47         return NULL;
  48 #endif
  49
  50 #if SHIM_NUM_HOOKS > 0
  51     SHIM_SETUP_HOOKS
  52 #endif
  53     return SHIM_OBJ_NAME(g_pAPIHooks);
  54 }
  55
  56
  57 #if defined(_MSC_VER)
  58 #pragma section(".shm$BBB",long,read)
  59 #endif
  60
  61 _SHMALLOC(".shm$BBB") SHIMREG SHIM_OBJ_NAME(_shim_fn) =
  62 {
  63     SHIM_OBJ_NAME(GetHookAPIs),
  64 #ifdef SHIM_NOTIFY_FN
  65     SHIM_NOTIFY_FN,
  66 #else
  67     NULL,
  68 #endif
  69     SHIM_STRINGIFY(SHIM_NS)
  70 };
  71
  72 #undef SHIM_SETUP_HOOKS
  73 #undef SHIM_NOTIFY_FN
  74 #undef SHIM_NUM_HOOKS
  75 #undef SHIM_NS